F(x) = 2x2 – 4x – 3
0 = 2x2 – 4x – 3
3 = 2(x2 – 2x)
3 + 1 = 2(x2 – 2x + 1)
4 = 2(x – 1)2
2 = (x – 1)2
± = x – 1
1 ± = x
Mica is solving for the zeros of a quadratic function by completing the square. Her work is shown. What error did Mica make?
ANSWER CHOICES
Mica should have set each x = 0 instead of f(x).
Mica should have added 2 to 3 instead of 1.
Mica should have multiplied both sides by 2 instead of dividing.
Mica should have subtracted 1 from both sides instead of adding.
How do I find X in this math problem?
Fill in the scale dimensions in the table to the nearest thousandth. The scale of a blueprint is 1/4 inch = 1 foot. A house has 1 bedroom measuring 10 feet 6 inches by 11 feet, a living room measuring 25 feet by 18 feet 8 inches, a kitchen measuring 13 feet 6 inches by 8 feet, and a dining room measuring 12 feet by 10 feet. Put the shortest length in the first box for each room. Give all answers to three decimal places (thousandths place).
bedroom inches by inches
living room inches by inches
kitchen inches by inches
dining room inches by inches
The scale dimensions of the rooms on the blueprint using a scale of 1/4 inch = 1 foot are calculated by converting feet to inches, then dividing by the scale ratio (0.25 inches per foot) to find each room's dimensions in inches on the blueprint.
To calculate the scale dimensions of the rooms on the blueprint, you will use the given scale of 1/4 inch = 1 foot. This means for every 1/4 inch on the blueprint, it represents 1 foot in actual size.
Step-by-Step Calculation for Each Room
Convert the scale into a ratio that can be used for calculations (1/4 inch / 1 foot or 0.25 inches / 12 inches since there are 12 inches in a foot).
Calculate the scale dimension for each room by dividing the actual dimension in inches by the scale ratio.
For each room, ensure to convert feet to inches first (1 foot = 12 inches) and then apply the scale.
Bedroom: 10 feet 6 inches is (10 * 12) + 6 = 126 inches, 11 feet is (11 * 12) = 132 inches. Scale dimensions: (126 inches / 48) by (132 inches / 48) equals 2.625 inches by 2.750 inches.Living room: 25 feet is (25 * 12) = 300 inches, 18 feet 8 inches is (18 * 12) + 8 = 224 inches. Scale dimensions: (300 inches / 48) by (224 inches / 48) equals 6.250 inches by 4.667 inches.Kitchen: 13 feet 6 inches is (13 * 12) + 6 = 162 inches, 8 feet is (8 * 12) = 96 inches. Scale dimensions: (162 inches / 48) by (96 inches / 48) equals 3.375 inches by 2.000 inches.Dining room: 12 feet is (12 * 12) = 144 inches, 10 feet is (10 * 12) = 120 inches. Scale dimensions: (144 inches / 48) by (120 inches / 48) equals 3.000 inches by 2.500 inches.Below is the scale dimensions for each room to the nearest thousandth:
Bedroom: 2.625 inches by 2.750 inchesLiving room: 6.250 inches by 4.667 inchesKitchen: 3.375 inches by 2.000 inchesDining room: 3.000 inches by 2.500 inchesSuppose we deposit $73,000 into a savings account which compounds daily with 5% APY and we want to know how much the account will be worth after two days.
Anita says CD can also be called DC. Do you agree?Explain
I'm talking about line segments
Bluesky air has the best on-time arrival rate with 80% of its flights arriving on time. a test is conducted by randomly selecting 16 bluesky air flights and observing whether they arrive on time. what is the probability that 2 flights of bluesky air arrive late? (please carry answers to at least six decimal places in intermediate steps. give your final answer to the nearest four decimal places).
The problem can be solved by using the binomial probability formula. We know that the binomial model deals with the probability of success of an event in a series of experiments. Plug the values into the binomial formula to find the probability that 2 flights out of 16 selected flights will arrive late.
Explanation:This problem can be solved using the binomial probability formula. The binomial distribution model deals with finding the probability of success of an event that has only two possible outcomes in a series of experiments, such as a coin toss.
Given that the probability of a flight arriving on time is 80%, the probability (p) for a flight arriving late is 20% or 0.2. We are looking for the probability that 2 out of 16 flights arrive late. This is a binomial problem where n=16 (the number of trials), k=2 (the number of successes), and p=0.2 (probability of success).
The binomial formula is P(X=k) = C(n, k) * (p^k) * (1-p)^(n-k)
where C(n, k) is a combination that calculates the number of possible combinations of n items taken k at a time, without regard to the order of selection.
So, to solve this problem:
First, calculate C(16, 2).Second, calculate (0.2^2).Third, calculate ((1-0.2)^(16-2)).Lastly, multiply those three results together to get the final probability.The probability that 2 flights out of 16 selected flights will arrive late can be computed by plugging these values into the binomial formula.
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Is the answer 85.3???????
PLEASE HELP ME QUICKLY!!!!!!!!!!!!!!
If f(x) = 9x – 7 and g(x) = 2x2 – 3x + 1, what is (f + g)(4)?
a. -8
b. 8
c. 34
d. 50
Answer:
D. 50
Step-by-step explanation:
[tex]f(x) = 9x - 7 \\ g(x) = 2x {}^{2} - 3x + 1 \\( f + g)(x) = 9x - 7 + (2x {}^{2} - 3x + 1) \\ (f + g)(x) = 2x {}^{2} + 6x - 6 \\ (f + g)(4) = 2(4 ){}^{2} + 6(4) - 6 \\ (f + g)(4) = 32 + 24 - 6 \\ (f + g)(4) = 56 - 6 \\ (f + g)(4) = 50[/tex]
Circle 1: center (8, 5) and radius 6
Circle 2: center (−2, 1) and radius 2
What transformations can be applied to Circle 1 to prove that the circles are similar?
What scale factor does the dilation from Circle 1 to Circle 2 have?
Show your work.
what steps transform the graph of y=x^2 to y= -(x+3)^2+5
A pizza place is offering 20% discount off all it's pizzas Ali orders a pizza for the reduced price of £5.60 Work out the original price
4) A mountain climber climbed up a cliff 1/4 mile at a time. he did this 5 times in one day. How many miles did he climb up? *
A die is tossed. Find the odds against rolling a number greater than 4.
*the probability of rolling a # greater than 4 is 1/3.
*the probability that the event doesn't occur is 2/3.
What is the ratio?
state whether the relationship between x and y in y=4x-5 is proportional or nonproportional
Write the percent as a decimal and as a fraction.
215% (1 point)
2.15; 2 1/20
2.15; 2 3/20
21.5; 21,1/2
21.5; 21, 3/10
Just tell me what one what it is..
I'LL GIVE A MEDAL (:,
Find the radius of a circle with the equation 2x2+y2-6x+2y-45=0
10,11, and 12 please and show work
What is the coefficient of the term x7y in the expansion of (x + y)^8?
a1
b8
c28
d56,
The base 10 logarithm is called the _____ logarithm and is often written as log x instead of log10 x.,
Find the 7th term of the arithmetic sequence -5x-8,-x-14,3x-20,...
Need Help. I will give a thanks and rate you 5 stars.
2. A tree that is 10 yards tall casts a shadow 14 yards long. Find the angle of elevation from the tip of the shadow to the top of the tree. Round to the nearest degree.
A. 54
B. 36
C. 46
D. 44
3. Use the Law of Sines to find the missing side of the triangle. Find b.
A. 70.1
B. 43.8
C. 57.1
D. 31.5
4. For a triangle ABC, find the measure of AB given m A. 45.22
B. 96.68
C. 88.19
D. 81.12
5. Use the Law of Cosines to solve the problem. On a baseball field, the pitchers mound is 60.5 feet from home plate. During practice, a batter hits a ball 216 feet. the path of the ball makes a 34 angle with the line connecting the pitcher and the catcher, to the right of the pitcher's mound. An outfielder catches the ball and throws it to the pitcher. How far does the outfielder throw the ball?
A. 207.4 ft
B. 224.3 ft
C. 169.3 ft
D.
please help I don't understand this
Solve for x
2/(9x) = 4/7
18/7
I don't know
- 18/7
7/18
- 7/18
Soon you will determine the right triangle connection the pythagorean theorem
What is cot theta when sin theta < 0 and cos theta = -5/13
A cube with side length 2f is stacked on another cube with side length 3g2. Choose the expression that represents the total volume of the cubes.
Answer:
the answer is c
Step-by-step explanation:
Barbara is building a wooden cabin. The cabin is 42 meters wide. She obtained a bunch of 27 meters long wooden beams for the roof of the cabin. Naturally, she wants to place the roof beams in such an angle that each pair of opposite beams would meet exactly in the middle. What is the angle of elevation, in degrees, of the roof beams?
The angle of elevation is 38.9° if Barbara is building a wooden cabin. The cabin is 42 meters wide. She obtained a bunch of 27 meters long wooden beams for the roof of the cabin.
What is trigonometry?Trigonometry is a branch of mathematics that deals with the relationship between sides and angles of a right-angle triangle.
We have:
Width of the cabin = 42 meters
Wooden beam length = 27 meters
Since opposite beams would meet exactly in the middle.
The half of the beam width = 42/2 ⇒ 21 meters
As we can see in the right angle triangle:
[tex]\rm cosx = \frac{21}{27}[/tex]
[tex]\rm x = cos^{-1}(\frac{21}{27} )[/tex]
x = 38.9°
Thus, the angle of elevation is 38.9° if Barbara is building a wooden cabin. The cabin is 42 meters wide. She obtained a bunch of 27 meters long wooden beams for the roof of the cabin.
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Could someone please help me with this?
Ashley is digging for rocks at a geological site. She has 140 meters of rope and 4 stakes to mark off a rectangular area. Which set of dimensions will create a rectangle using all the rope Ashley has with her?
14 m × 10 m
70 m × 70 m
60 m × 10 m
55 m × 10 m
The total perimeter of the rectangle is P = 140m and the length and width of the rectangle is 60 m and 10 m respectively
What is the Perimeter of a Rectangle?The perimeter P of a rectangle is given by the formula, P=2 ( L + W) , where L is the length and W is the width of the rectangle.
Perimeter P = 2 ( Length + Width )
Given data ,
Let the perimeter of the rectangle be represented as P
Now , the equation will be
Let the total perimeter of rectangle P = 140 m
The Perimeter P = 2 ( Length + Width )
Let the length of the rectangle L = 60m
Let the width of the rectangle be W = 10 m
So , Perimeter P = 140 m
140 = 2 ( L + W )
140 = 2 ( 60 + 10 )
140 = 2 ( 70 )
140 = 140
Therefore , the length and width is given by 60m x 10m
Hence , the perimeter of rectangle is P = 140 m
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In ancient Egypt, surveyors made right angles by stretching a rope with evenly spaced knots as shown. Explain why the ropes forms a right angle
In ancient Egypt, surveyors made right angles by stretching a rope with evenly spaced knots. The tensions in the rope on either side of the right angle were equal, resulting in the formation of a right angle.
Explanation:In ancient Egypt, surveyors made right angles by stretching a rope with evenly spaced knots. The ropes formed a right angle because the angles on either side of the rope were equal. When the rope was stretched taut, the tensions in the rope on either side of the right angle were equal. This resulted in the formation of a right angle.